Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9023b7f65f21560…

MALICIOUS

PDF

72.0 KB Created: 2021-03-03 06:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4f60bdd236b5eeb00a7fa9edfd25e49e SHA-1: e423254ce2d209132ebf6f40883ecec835803fd0 SHA-256: d9023b7f65f2156043be946382f14b21c2d9110d98e9581af04529a44af4d792
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://vilenefex.ru/wix?keyword=combustion+synthesis+and+decomposition+reactions+worksheet PDF link annotation
    • http://lajibodomemebev.66ghz.com/dragon_age_inquisition_multiplayer_gear_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457000/normal_6013a8a3d50cb.pdfIn PDF document text
    • http://zesozejaja.22web.org/36811040472.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465006/normal_6028f124d1190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412159/normal_602124849f979.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/75555298128.pdfIn PDF document text
    • http://jeputujakajaj.epizy.com/abstract_algebra_cyclic_groups.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/miniclip_motherload_android.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/high_school_basketball_court_template.pdfIn PDF document text
    • http://wawutanow.epizy.com/liturilino.pdfIn PDF document text
    • http://monufaro.epizy.com/bhutto_dj_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/winelimag.pdfIn PDF document text
    • http://bipaxoxibiva.rf.gd/feasibility_report_preparation_in_entrepreneurship.pdfIn PDF document text
    • http://xugivazule.rf.gd/88637164619.pdfIn PDF document text
    • http://nusilelopalal.epizy.com/gobevufovuvupivejunitub.pdfIn PDF document text
    • http://gewofudi.rf.gd/microsoft_access_it_inventory_template.pdfIn PDF document text
    • http://katezoluvezile.epizy.com/sundance_tv_channel_guide.pdfIn PDF document text
    • http://saxowuwu.rf.gd/toparupovexizulezi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF15 5584 bytes
SHA-256: 68058f9e9882488d4b601ca97b968ee98925fffcc832b727d2ffc23d97f99f5b
font_01_sfnt_off0000e1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 10044 bytes
SHA-256: 9910cb76f53d3fd47d50cf1696cb58e0f58bcbef2341b40bf29f271be5e41ba4
font_02_sfnt_off00010452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10452 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e